living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             1 Class †Placodermi McCoy, 1848
             2 Class Agnatha Cope, 1889
             3 Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
             4 Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
             5 Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
             6 Class Reptilia Linnaeus, 1758 - reptiles
             7 Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
             8 Class Mammalia Linnaeus, 1758 - mammals